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相互注入锁定是相干合成技术中最具发展前景的方案之一.在两个光纤激光器相互注入锁定的基础上,利用可调节光纤光栅改变其中一个激光器的中心谱线和利用不同的分束器改变两个激光器间的耦合系数,同时监测两个激光器的远场光斑和谱线,判断激光器谱线和耦合系数对相互注入锁定的影响.通过理论和实验得到:提高耦合系数可以提高锁定的频率差;两个激光器的谱线越接近锁定的效果越好,当激光器的谱线超过一定范围时,两个激光器将不能被锁定.
Mutual injection locking is one of the most promising solutions in coherent synthesis technology.On the basis of mutual injection locking of two fiber lasers, the center line of one of the lasers can be changed by means of an adjustable fiber grating and different beam splitters can be used to change The coupling coefficient between the two lasers and the far spot and line of the two lasers are monitored to determine the effect of the laser line and the coupling coefficient on the mutual injection locking.The theoretical and experimental results show that increasing the coupling coefficient can improve the frequency difference of locking ; The better the line closer to the lock of the two laser lines, the two lasers will not be locked when the laser line exceeds a certain range.